Thursday, September 5, 2013

Electrical codes

  September 05, 2013 Blogger   No comments
Electrical codes are sets of rules established by governing bodies which state:   • Type of equipment to be used in a given situation • Appropriate use • Installation procedures, including how and where it should be installed Codes usually carry mandatory compliance, and can apply nationally or to a more limited area, such as a single local municipality. In any case,...

The new IEC 61439: better or worse than its predecessor 60439?

  September 05, 2013 Blogger   No comments
Improvements in IEC 61439 series compared to IEC 60439 series. The new document structure: Readability of the IEC 61439 has been improved compared to the IEC 60439 by implementing the new structure of the clauses: a) Clauses for normative reference and definitions are separated; b) Newly introduced in clause 4 is a table with all the typical units for LV systems; c) Also...

Tuesday, September 3, 2013

Friday, August 30, 2013

Wednesday, August 28, 2013

IK Shock-Protection Rate

  August 28, 2013 Blogger   No comments
IK Shock-Protection Rate IK-Class  IK 00 No Shock-Protection  IK 01 Resistance against impacts with an energy up to 0,150 J IK 02 Resistance against impacts with an energy up to 0,200 J IK 03 Resistance against impacts with an energy up to 0,350 J IK 04 Resistance...

Thursday, August 22, 2013

Friday, August 16, 2013

Thursday, August 15, 2013

Overview of the main verification changes (IEC 61439 vs IEC 60439)

  August 15, 2013 Blogger   No comments
> Design verification   ·         Increased requirements for insulating materials and transient overvoltages withstand tests. ·         Temperature rise verification: ü  Verification by test of each functional unit loaded alone with its rated current ü  Clear methods for the selection...

Wednesday, August 14, 2013

Tuesday, August 13, 2013

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